Dental-flask holder



J. E. GADBOIS.

DENTAL FLASK HOLDER.

APPLICATION FILED NOV.27, I920.

1 ,410,291 Patented Mar. 21, 1922 INVEL-NTETF LTUEEPHEGADBUIB UNITED STATES PATENT OFFICE.

DENTAL-FLASH HOLDER.

Lei-10,291..

Application filed November 27, 1920.

To all w /mm if: may concern:

Be it known that .losnrn E. thinners, a citizen of the United States of America, residing at Springfield, in the county of Hampden and State of Massachusetts, has invented certain new and useful improvements in Dental-Flask Holders, of which the following is a specification.

This invention relates to improvements in means for holding dental flasks in vulcanizers to insure accurate molding of the work, and its leading; object is to provide a device ofthis character which can be quickly adjusted so as to hold one or a number of flasks in clamping position in the vulcanizer, and is capablcof yielding under excessive pressure within the flask due to the heating of the contents thereof, and this without diminishing the clamping pressure.

Another object of the invention is to pro vide a device of this character with means for preventing" the follower from yielding or warping and the uprights or guides from spreading apart.

With the above and other objects in view this invention relates to certain new and useful constructions, combinations and arrangements of parts, clearly described in the following specification and fully illustrated in the accompanying drawings, in which:

'Figure 1 is a side elevation.

Figure 2 is a top plan view.

'Fipnre is a horizontal sectional view taken on'line 2 of Fig. 1.

Figure 41 is a detail in vertical section of certain of the clamping elements.

Referring to the accompanying drawings 5 designates a metal base to opposite sides of which are secured. the standards or vertical guides 6 and 7 each being provided with a series of notches or recesses 8 providing spaced teeth or lugs 9.

()n the upright guides 6 and 7 a follower plate 10 is slidably mounted, said follower plate having openings 1O provided in cars 11, and said ears being; formed with depending extensions 11 engaging the outer faces of the guides 6 and 7 so as to brace said follower plate and insure the correct vertical movement thereof without'tilting and interlooking with the lugs or notches described. Each of the uprights may also be provided with a V shaped rib or edge portion 12 whereby the follower will be held against lateral movement on the uprights,- said fol- Specification of Letters 3atent Patented Blew. 21, 1922.

Serial No. 426,880'=}.

lower being formed with corresponding grooves.

The follower plate 10 is provided with a central opening through which a clamping screw 13 extends. The lower end of this clamping screw has a collar 14 swiveled thereto and the upper end carries a head 15 whereby the screw may be operated, said head being formed with transverse openings or the like. The screw 13 is in threaded engagement with nuts 16 and 20 between which the composite spring 17 is suitably clamped. The spring 17 has arms 1'7 curved against the under side ofthe plate 10 and the spring); is held against relative movement on the follower plate by means of pins 18 securedto said plate. A-pin 21 passes through the plate 10 and the spring 17 at a point adjacent to the nuts 16'and 20, and is headed over at both ends. This pin retains the spring 17 with its arms 1'7 in contact with the plate 10, but does not interfere with the required compression and expansion of said spring. The screw 13 is loose in the follower plate. and a cross bar 19 loosely mounted on said'screw abovesaid plate and adapted to be moved into interlocking relation with the lugs or notches of the uprights 6 and 7.

In practice. the follower 10 with attached parts is raised a'sufiicient distance to per mit a flash to be placed on. the base 5, and then said follower is lowered until the (101-. lar 14 and the base of the clamping screw 13. come to rest on top ofsaid flask; next said follower is locked. in position by means of the bar 19 which is partially rotated on its axis into engagement with twoof the teeth 9; and, finally,:said screw is rotated in the direction to actuate the same downwardly in the nuts 16 and 20 to the required extent. As the screwlil is turned down it fulcrums on orhas its bearings in the nuts 1. A. dental flask holder comprising rig-- idly connected uprights, a follower slidingly arranged on said uprights, means to locla: sa1d follower to said uprights, a clamping screw, and resilient means for attaching saidv screw to said follower.

2. A dental flask holder comprising rigidly connected uprights, a follower slidingly arranged on said uprights, means to loci:

said follower to said uprights, resilient means supported. from and bearing against said follower, and a clamping screw in engagement with said resilient means, and adapted to exert a yielding pressure on an object engagesil by said screw.

3. A dental flask holder comprising rigidly connected uprights, a follower arranged to slide on said uprights, means to lock said follower to said uprights, resilient means supported from and bearing against said follower without being deprivedof the .requiredamount of expansion and contraction, and a clampingscrew in engagement with said resilient means, and adapted to exert a yielding pressure on an object engaged by said screw. I

4. A dental flask holder comprising rigidly connected uprights, a follower arranged to slide on said uprights, means to lock said follower to said uprights, resilient means supported from and bearing against said follower, means to hold said resilient means against independent rotation relative to said follower, and a clamping screw in engagement with saidresilient means, and adapted I to exert a yielding pressure on an object engaged by said screw.

p dental. flask holder comprising rigidly connected uprights, a follower arranged to slide on said uprights, means to lock said follower to said uprights, resilient means supported from said follower without'being .deprivedof the required amount of expansion and contraction.- means to hold said resilient means against independent rotation relative to said follower, and clamping screw in engagement with said resilient means, and adapted to exert a yielding pressure on an object engaged by said screw.

*6. A dental flask holder comprising rigidly connected uprights, a follower slidingly arranged on said uprights, means to look said follower to said uprights, resilient means supported from and bearing against said follower, and a clamping screw provided at one end with a swivel plate, said screw being in engagement with said rcsilient means, and adapted to exert a yield ing pressure on an object engaged by said screw.

7. A dental flask holder comprising rigidly connected uprights, a follower arranged to slide on said uprights, means to lock said follower to said uprights, a spring below said follower, said spring having arms to bear against the follower, which latter is provided with projecting members to hold said spring against independentmovement relative thereto, and a clamping screw in engagement with said spring, and adapted to exert a yielding pressure on an object engaged by said screw.

8. A dental flask holder comprising rigidly connected uprights, a follower arranged to slide on said uprights means to lock said follower ,to said uprights, a spring having arms adapted to bear against said follower, washers on opposite sides of said spring, means to secure said spring and washers together, a clamping screw passing loosely throughsaid follower and in threaded en-.

gagement withsaid washers, and means to hold said spring against rotation relative to said follower. r

9. The combination, in a dental flask holder, with a base, and serrated posts rising from said base, of a follower arranged to slide on said uprights, resilient means carried by said follower, ascrew passing loosely through said follower and into threaded engagement with said means, and a locking bar mounted on said. screw above said fol.- lower, and adapted tobe engaged with and disengaged from the serrations in said post.

10. The combination, in a dental flask holder, with a base, and serrated posts mounted on said base, of a follower having perforations therein to receive said posts, and being adapted to slideup and down thereon, resilient means-harried by said follower, a screw passing loosely through said follower and into threaded engagement with said means. and a locking bar mounted on sa1d screw above sa1d follower to engage and disengage the serrations 1n sa1d posts, said bar being adapted when in engagement with setts.

JOSEPH E. GADBOIS. 

